SuperB a few notes

1
SuperBa few notes

• G.Piredda
• Oct 6th 2006

2
The physics case

• See for example
• The Discovery Potential of a Super B Factory
  (Slac-R-709)
• Letter of Intent for KEK Super B Factory ( KEK
  Report 2004-4 )
• Physics at Super B Factory ( hep-ex/0406071 )
• At the URL
• www.pi.infn.it/SuperB
• you can find documents and links to documents
• In addition the case was discussed in the CERN
  series of workshops organized by M.Mangano and
  T.Hurth of the Cern Theory division
• Flavour Physics in the era of LHC
• The first 3 worksops in Nov 2006, Feb 2006, May
  2006
• The May workshop included a special session
  devoted to High intensity, High luminosity
  flavour experiments with a comparison of the
  existing projects as SuperB, SuperKEKB and LHCb
  .
• The fourth CERN meeting will be held in october
  10-12,2006

3
The Machine Requirements

• Peak luminosity at Y4s gt 1036
• Geometrical acceptancegt 99
• Background in the detector lt present background
  in BaBar and Belle
• Narrow beams and low bkgd allowing better
• vertexing
• Large Synergy with ILC.
• Wall power ltlt50MW
• Operation at the same time of LHC and before ILC.
• EVALUATE (cost/benefit also compared to the main
  physics program)
• Possible operations in special runs at lower
  energy as SuperTauCharm
• Possibility of one polarized beam for studying
  asymmetries due to T odd observables in tau
  decay.

4
Sigx mm 2.67
Etax mm 0.0
Sigy nm 12.6
Betx mm 9.0
Bety mm 0.080
Sigz_IP mm 6.0
Sige_IP 1.3e-3
Sige_Lum 0.9e-3
Emix nm 0.8
Emiy nm 0.002
Emiz mm 8.0
Cross_angle mrad 225
Sigz_DR mm 6.0
Sige_DR 1.3e-3
Np 10e10 2.3
Nbunches 6000
DR_length km 3.0
Damping_time msec 20
Nturns_betwe_coll 1
Collision freq MHz 600
Lsingleturn 1e36 1.2
Lmultiturn 1e36 1.0

• Defined a parameters set based on ILC-like
  parameters
• Same DR emittances
• Same DR bunch length
• Same DR bunch charges
• Same DR damping time
• Same ILC-IP betas
• Crossing Angle and Crab Waist to minimize BB
  blowup

5
Simplified SuperB layout Crossing angle 225
mrad
ILC ring ILC FF
6
(No Transcript)
7
Crabbed waist
8
From the 3rd SuperB Workshop (June )

• Since beginning of SuperB International Study
  Group the goal was clear
• Study physics case, machine and detector for a
  Super Flavor Factory with a luminosity higher
  than 1036, to study physics in b, c and t
  sectors.
• Prepare by the end of 2006 a Conceptual Design
  Report CDR to be delivered to the President of
  INFN and presented to the International
  Community.
• Events
• July23-26 Meeting at ITEP Moscow
• Presentations on Super KEKB and on SuperB
  projects followed by a round table

to the fourth one (November)
Finalize the machine design Complete the detector
design Review the various Physics Chapters
Write everything up, Make the Editorial Board of
the Conceptual Design Report
9
The Site

• Site of SuperB is not defined and will remain
  undefined for quite a while.
• With present parameter choice the SuperB can
  reuse almost all the components of PEP-II.
• It can be located in a tunnel of 6Km, 3Km or 2
  Km.
• Possible existing locations
• Hamburg-Desy (Fermilab?)
• KEK
• Slac
• New site??
• at the moment this is our first
  choice!

10
Possible site Tor Vergata campusRing
circumference 3. to 2.2 Km
11
NEXT WORKSHOP
http//www.infn.it/csn1/conference/superb/index.ht
ml